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From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org, johan@kernel.org
Cc: Mikko Perttunen <mperttunen@nvidia.com>,
	Miaoqian Lin <linmq006@gmail.com>,
	Stephen Boyd <sboyd@kernel.org>,
	linux-clk@vger.kernel.org, linux-tegra@vger.kernel.org
Subject: FAILED: Patch "clk: tegra: tegra124-emc: fix device leak on set_rate()" failed to apply to 6.1-stable tree
Date: Sat, 28 Feb 2026 20:43:21 -0500	[thread overview]
Message-ID: <20260301014321.1705438-1-sashal@kernel.org> (raw)

The patch below does not apply to the 6.1-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From da61439c63d34ae6503d080a847f144d587e3a48 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Fri, 21 Nov 2025 17:40:03 +0100
Subject: [PATCH] clk: tegra: tegra124-emc: fix device leak on set_rate()

Make sure to drop the reference taken when looking up the EMC device and
its driver data on first set_rate().

Note that holding a reference to a device does not prevent its driver
data from going away so there is no point in keeping the reference.

Fixes: 2db04f16b589 ("clk: tegra: Add EMC clock driver")
Fixes: 6d6ef58c2470 ("clk: tegra: tegra124-emc: Fix missing put_device() call in emc_ensure_emc_driver")
Cc: stable@vger.kernel.org	# 4.2: 6d6ef58c2470
Cc: Mikko Perttunen <mperttunen@nvidia.com>
Cc: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
 drivers/clk/tegra/clk-tegra124-emc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/tegra/clk-tegra124-emc.c b/drivers/clk/tegra/clk-tegra124-emc.c
index 2a6db04342815..2777e70da8b99 100644
--- a/drivers/clk/tegra/clk-tegra124-emc.c
+++ b/drivers/clk/tegra/clk-tegra124-emc.c
@@ -197,8 +197,8 @@ static struct tegra_emc *emc_ensure_emc_driver(struct tegra_clk_emc *tegra)
 	tegra->emc_node = NULL;
 
 	tegra->emc = platform_get_drvdata(pdev);
+	put_device(&pdev->dev);
 	if (!tegra->emc) {
-		put_device(&pdev->dev);
 		pr_err("%s: cannot find EMC driver\n", __func__);
 		return NULL;
 	}
-- 
2.51.0





                 reply	other threads:[~2026-03-01  1:43 UTC|newest]

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